炉火纯青 (爐火純青) lúhuǒ chún qīng

lúhuǒ chún qīng set phrase the stove fire has turned bright green (allusion to Daoist alchemy)
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '爐火純青')

Word is mentioned most frequently in

Truncated for common words